HOTCalculator
Reference
Free · In‑App Purchases · Designed for iPad
Calculate hold-over time fast and easy with the HOTCalculator! With this app you can find the holdover-time in a few seconds. No more searching for the right page and table in your paper manuals. Very handy tool for all pilots during winter ops.
The perfect tool to include in your Electronic Flight Bag!
Features:
- Support for Type I, Type II, Type III and Type IV de-icing and anti-icing fluids
- *NEW*: Select FAA or Transport Canada HOT guidelines
- Use °C or °F as appropriate
- *NEW*: Includes adjusted holdover times for anti-icing with flaps extended
- Usable in flight mode, when you need it the most
- Set a timer that gives off an alarm when the holdover-time expires
- Includes Allowance Times for Type IV fluids
Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
- Bugfix: Timer counting down in background (iOS 26)
- Bugfix: Fetching subscription data before loading the view.
The developer, Johan Bergsee, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Johan Bergsee
- Size
- 6.2 MB
- Category
- Reference
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- All fluids, 1 year $3.99
- All fluids winter 2025-2026 $4.99
- Copyright
- © 2011 JN Avionics